Means for supplying fuel to internal-combustion engines



A. G. REDMOND MEANS FOR SUPPLYING FUEL TO INTERNAL COMBUSTION ENGINES Filed Feb. l4, 1923 Patented @ct. Q, 1928..

cara an stare "earner errata ALBERT G. BEDMOND, 01* FLINT, MICHIGAN, ASSIGNOR T0 JACOB RICHARD FRANGlS,

OF FLINT, MICHIGAN.

MEANS FOR SUPPLYING FUEL T0 INTEBNAIi-COMBUSTION ENGINES.

Application filed February 14, 1923. Serial No. 618,991.

This invention relates to certain new and useful improvements in means for supplying fuel to an internal'combustion engine and is a continuation of my application for sup-plying fuel to charge forming devices, filed August 18, 1922, Serial No. 582,574, the object being to provide in addition to the means for supplying fuel to charge forming devices, means for supplying fuel to the cylinders of the engine above the throttle of the charge forming device so that the internal combustion engine can be readily started by delivering to the cylinders of the engine gasoline so as to prime the engine.

Another object of my invention is to provide in connection with the fuel supplying means priming, means under the control of the operator whereby in normal operation of the fuel supplying means with the charge forming device, the priming means. is inoperative.

A still further object of the invention is to provide means for heating the raw'fuel in 1ts passage to the cylinder of the engine above the throttle under the control of the operator so that the gas will be heated before being delivered to the internal combustion engine to enable the same to vaporize readily so that a priming charge will be delivered to the cylinders of the engine in such a condition that the engine can be readily started. I have found in practice with a fuel supplying means constructed in accordance with my invention as shown in the above referred to application, that the fuel in the fuel line from the main supply tank to the charge forming device is maintained under sufficient pressure toforce the .fuel directly into the cylinders of the engine and to accomplish this result I have provided a branch pipe leading from the fuel line to the intake manifold at the point of connection with the internal combustion engine and arranged within this branch line a valve on the dash of the motor vehicle to which the device is attached so that by opening the valve, the fuel will be injected directly into the internal combustion engine so as to prime the same for starting.

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the ap ended claims.

n the drawing I have shown diagrammats ically the construction of my improved fuel feeding means for internal combustion engines 1n whlch 1 indicates the internal combustlon engine, 2 the intake manifold, 3 the charge forming device and 4 the main fuel tank which-is located in a plane-beneath the charge forming device.

Mounted within the tank 4: is an electrical pump 5 for supplying fuel directly to'the charge forming device 3 through a pipe 6 which is provided with a branch pipe 7 connected to a valve casing 8 which is preferably mounted on the dash 9 of the motor vehicle to which the device is attached. Extending from the valve casing 8 is a pipe 10 herein shown provided with nipples 11 extending into the branches of the main intake manifold 2 so that fuel will be injected into the manifold at the point of cbnnection and while I of gasoline therethroiigh.

The electrical pump 5 is in electrical circuit with abattery 13, said circuit having a maker and breaker 14 driven and timedby the internal combustion engine so as to" make and break the circuit for energizing-and deenergizing the electro-magnet or solenoid of the pump for intermittently reciprocating the piston and the construction of the pump is substantially the same as shown in my application filed August 18, 1922, Serial Number 582,574, wherein when the circuit is completed, the piston of the pump is raised and when the circuit is broken, the piston is allowed to drop for forcing gasoline out of the pump cylinder through the pipe line 6 directly-into the fuel bowl of the charge forming device, which is provided with the usual float valve for operating a needle valve for controlling the needle which is held on its seat under subforming device as. clearly described in the above referred to application, the stroke of the piston of the pump is determined by the consumption of fuel in the charge forming device so that the fuel is maintained in the fuel line pipe extending from the main supply tank to the charge forming device under pressure at all times whereby when the level vice, fuel is instantaneously delivered into the bowl of the charge vforming device. The maker and breaker or timing device for completing the circuit is preferably driven by the internal combustion engine so that the circuit is made and broken, as for example, every twenty revolutions of the'internal combustion engine so that the piston of the pump is raised and allowed to drop to supply fuel constantly to the charge forming device, but of course,

the number of times that the circuit is made and broken is determined by the engine to which the device is applied.

The electrical pump 5 is also in electrical circuit through a push but-ton 16 arranged on 'of the fuel drops in the charge forming de' the dash 9 to be manually operated for energizing the solenoid so as to raise the piston of the pump by allowing the electrical energy to flow through. the solenoid which provides means for manually operating the pump independent of the engine operating means whereby the pump can be operated so as to supply an additional amount of fuel when desired and it is especially adapted to be used in case of leakage or in starting a new motor vehicle. This push button also enables the injecting of a continuous suppl of fuel into the internal combustion enginea ove the throttle when the valve 12 is opened by intermittently ushing the button 16. Arranged over the ranch pipe 7 is a heating element in circuit with the attery through a push button 18 whereb the fuel inthe branch pipe will. be

' heated efore being delivered to the internal combustion engine for priming purposes.

' While I have only shown diagrammatically the means for supplying fuel to a charge forniing device timed by the internal combustion engine, the construction is substantially the same as shown in m application Serial No.

have shown means for accomplishing this re-' sult in the form of a branch line extending from the main fuel line pipe to the engine, said branch line being provided with a manually operated valve upon the opening of which pressure in the fuel line will inject fuel to the cylinders of the internal combustion engme.

From the foregoing description it will be seen that I have provi ed in combination with means for supplying fuel to a charge forming device in the form of an electrical pump so constructed to supply fuel. from a low level tank to the charge forming device to maintain in the pipe line extending from said tank to said charge forming device, fuel under pressure in connection with a branch from said fuel line pipe to a point above the charge forming device under the control of the operator whereb an additional charge of fuel can be injecte into the manifold or directly into the cylinders of the engine and while I am aware that electrical primers have been produced, my invention consists in the combination of a priming device and means for supplying fuel to the charge forming device.

lVhat I claim is 1. Means for supplying fuel to internal combustion engines comprising an electrical pump for elevating fuel from a main supply tank directly to the charge forming device of said engine so as to maintain fuel under pressure in the pipe line connecting said charge forming device to said pump, and a branch line extending from said pipe line to the intake manifold, said branch line having a manually operated valve controlling the supply of fuel therethrough'.

2. The combination with an internal combustion engine having an intake manifold, charge forming device and throttle valve for controlling the passage of explosive mixture to said engine, of a. main supply tank arranged in'a plane below .said charge forming device, means for forcing fuel out of said supply tank to said charge forming device and maintaining the same under pressure, said means being controlled by the internal combustion engine, manually operated means for operating said means and a branch line extending around said charge forming device in communication with the-intake manifold, above the throttle for supplying additional fuel to said internal combustion engine.

3. Means for supplying fuel to an internal combustion engine comprising a pump for elevating the fuel from the main supply tank directly to the charge forming device of said engine so as to maintain the fuel under pressure in the pipe line connecting said charge forming device to said pump, a branch line extending from said pipe line in communication with the'engine, means for heating the fuel passing through said branch line and a valve arranged within said branch line for controlling the passage of fuel therethrough.

4. The combination with an internal combustion en inc and charge forming device therefor, 0 means for lifting the fuel from a main supply tank to the charge .forming device thereof and maintaining said fuel waderpressure and means for by-passing a por tion of said fuel above said charge forming device for priming the engine.

5. The combination with an internal combustion engine having an intake manifold,-

tank located in a plane beneath said charge forming device and connected thereto by a supply pipe, of means for forcing fuel through said supply pipe and maintaining said fuel in said pipe under pressure and 3-.

branch pipe extending from said supply pipe to the intake manifold and a valve in said branch pipe for controlling the passage of fuel the'rethrough.-

6. In an internal combustion engine, the combination with a charge forming device for supplying explosive mixture thereto, of a supply tank arranged in a plane beneath said charge forming device, a pum for elevating fuel from said supply tan to sa d charge forming device and maintaining said fuel in the pipe line connecting said charge forming device to said tank under pressure and a valve controlled bypass extending from said pipe line in communication with said engine whereby fuel can be injected by the pressure within the fuel line pipe directly to the cylinders of the engine.

7 The combination with an internal combustion engine, a charge forming device and a fuel supply tank for supplying fuel thereto, of a pump for forcin fuel from said tank to said charge forming evice and maintaining said fuel under pressure and an electromagnet for operating said pump, means governed by the internal combustion eng'ine for intermittently energizing said elcctromagnet, manually operated means for energizing said magnet and means under the control of the operator for by-passing a portion of said fuel around said carbureter and injecting the same directly to the internal combustion engine for primingsaid en ine.

8. In an internal combustion engine av- .ing an intake manifold, charge forming device, main fuel supply tank and a pi e leading from said tank to said charge orming device, of an electrically operated pump for forcing fuel through said pipe and maintaining fuel therein under pressure, manually operated means for operating said pump, a branch pipe extending from said pipe to the intake manifold, means for heating the fuel passing therethrough and a valve arranged in said branch pipe for controlling the hassage of fuel therethrough.

9. In an internal combustion engine having an intake manifold, charge forming de-- vice, main fuel supply tank and a pipe leading from said tank to said char e forming devlce, of an electrically operate pump for forcing fuel through said pipe and maintaining fuel therein under pressure, manually operated means for operating said pump, a branch pipe' extending from said pipe to the said branch pipe for controlling the'passage of fuel therethrough. v

. 10. The combination with an internal combustion enginehaving an intake manifold, charge forming device and a pipe leading from said charge forming device to a main supply tank located in a plane'below said charge forming device, of means for forcing fuel through said pipe tosaid charge forming device and maintaining the fuel therein under pressure, a branch pipe by-passing said charge forming device in communication with the intake manifold of said en gine and a valve in said branch pipe for controlling the passage of fuel therethrough whereby fuel can be injected directly into said manifold above the charge forming device by opening said valve for priming said engine.

11. In an internal combustion engine, the combination with an intake manifold, charge forming device and a supply pipe for said charge forming device extending from a tank intake manifold, and a valve arranged in located in a plane below said charge forming through said pipe and maintaining the fuel therein under pressure and manually operated means for b -passing a portion of said fuel around said ciarge forming device for injecting said fuel into said manifold above said charge forming device. v

12. The combination with an internal combustion engine having a charge forming device,-a fuel supply tank located in a plane below said charge forming device, a pipe connecting said supply tank to said charge forming device, means for forcing fuel through said pipe and maintaining said fuel under pressure and means for utilizing the pressure of said fuel for by-passing a portion of said fuel around said charge formlng device to the-internal combustion engine.

13. Means for supplying fuel to internal combustion engines comprising means for elevating fuel from the main supply tank directly to the charge forming device, and

maintaining the same under even pressure in the pipe line, and a branch pipe extending from thepipe line to the intake manifold,

priming c arge can be injected into the manifold under pressure.

In testimony whereof I hereunto aflix my signature. I

' ALBERT G. REDMOND. 

